How can I uninstall Erlang/OTP which I use make install to build from source earlier. The install is pretty simple by using ./configure;make;make install;
The reason to uninstall is that I want to upgrade from Erlang R15B01 to Erlang R15B03.
Now I have:
# erl --version
Erlang R15B01 (erts-5.9.1) [source] [64-bit] [smp:2:2] [async-threads:0] [hipe] [kernel-poll:false]
Eshell V5.9.1 (abort with ^G)
1>
How to uninstall Erlang on Ubuntu:
sudo apt-get purge erlang*
Uninstall Erlang on Fedora:
sudo yum remove erlang*
If you installed erlang from source using the default home directory, you would need to rm -rf /usr/local/erlang/.
Additional cleanup might me required if you had manually copied libraries or executable to other folders, like */lib or */bin.
There is an option --prefix=path of script configure, where path is a path to directory where you want to install an application. For instance:
./configure --prefix=/opt/erlang-R15B01
Do not forget to add appropriate path to PATH environment variable.
If you didn't use this option during previous installation then the default path was used (/usr or /usr/local) and you can just install new version above old one the same way -
./configure && make && make install.
If you using Erlang for development I would suggest looking into kerl VM manager. It allows you to have multiple VM "installed" with different configuration options and possibility of switching between them.
As another alternative to kerl, we can also use erln8 to have multiple Erlang environment.
